EP0073160B1 - Antriebs- und Oszillationsführungsvorrichtung einer Stranggusskokille - Google Patents

Antriebs- und Oszillationsführungsvorrichtung einer Stranggusskokille Download PDF

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Publication number
EP0073160B1
EP0073160B1 EP82401295A EP82401295A EP0073160B1 EP 0073160 B1 EP0073160 B1 EP 0073160B1 EP 82401295 A EP82401295 A EP 82401295A EP 82401295 A EP82401295 A EP 82401295A EP 0073160 B1 EP0073160 B1 EP 0073160B1
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EP
European Patent Office
Prior art keywords
axis
connecting rod
support
eccentric
ingot mould
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82401295A
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English (en)
French (fr)
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EP0073160A1 (de
Inventor
Joel Cazaux
Joseph Pietryka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Cail Babcock SA
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Fives Cail Babcock SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8115430A external-priority patent/FR2510924A1/fr
Priority claimed from FR8206730A external-priority patent/FR2525132A2/fr
Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to AT82401295T priority Critical patent/ATE10713T1/de
Publication of EP0073160A1 publication Critical patent/EP0073160A1/de
Application granted granted Critical
Publication of EP0073160B1 publication Critical patent/EP0073160B1/de
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds

Definitions

  • the present invention relates to a device for controlling and guiding the oscillations of a continuous casting mold according to the preamble of claim 1, see for example FR-A-1 490 342.
  • the oscillations of a continuous casting mold are generally controlled from an eccentric system, by means of connecting rods and levers.
  • the guidance of the mold which aims to keep the axis of the mold cavity in coincidence with a theoretical curve called the casting axis is provided either by a set of levers, comprising the control lever (s), or by rollers or slides cooperating with guide surfaces provided on the support of the mold.
  • the current trend is to increase the oscillation frequencies of the molds.
  • the known devices do not allow the ingot mold to oscillate at frequencies much higher than those usually used hitherto, of the order of 100 to 150 oscillations per minute, because of their inertia and the inevitable games which, at frequent high, are the cause of noisy shocks and detrimental to the mechanical strength of the control members.
  • the object of the present invention is to provide a device making it possible to oscillate the ingot mold at high frequencies, which can reach 400 oscillations per minute, while minimizing the number of members of the kinematic chain between the control eccentrics and the ingot mold and using the same members for controlling and guiding the oscillations.
  • the device which is the subject of the present invention is characterized in that it consists of a first connecting rod mounted on a first eccentric which is carried by a fixed frame and whose axis is perpendicular to the casting axis if the latter is rectilinear, or to the direction of the tangent to this axis at a point located near the outlet of the ingot mold, if the casting axis is curved, and parallel to the vertical plane containing the axis of the ingot mold, and by a second connecting rod mounted on a second eccentric also carried by said chassis and whose axis is horizontal and perpendicular to the axis of the first eccentric, the mounting of each connecting rod on the respective eccentric and on the mold or its support being designed to prevent any movement of the connecting rod. relative to said frame and to the mold in a direction parallel to the axis of the eccentric; the eccentrics are integral with shafts which are coupled so as to ensure the synchronous drive of the two eccentrics.
  • the position of the articulation points of the connecting rods on the ingot mold or its support and, consequently, the arrangement of the eccentric shafts and the connecting rods are chosen according to the shape and dimensions of the ingot mold to reduce the mechanical stresses of the ingot mold or its support and / or to facilitate access to the mold.
  • the connecting rods can be arranged on two opposite sides of the mold or on the same side.
  • connecting rods that is to say to replace one of the connecting rods or each of them by two connecting rods mounted on two eccentrics whose axes are parallel. If these two connecting rods are arranged a short distance from each other, the eccentric shafts on which they are mounted can be aligned. But if they are relatively distant from each other, as may be the case for slab ingot molds which have large dimensions, these connecting rods must be mounted on eccentric shafts whose axes are parallel and which admit as median plane the same plane perpendicular to these axes. This arrangement avoids subjecting the mold support and the entire oscillation control mechanism to excessive stress when the support expands.
  • connection points between the connecting rods and the ingot mold or its support so that the plane containing the center of the universal joint linking the first connecting rod to the ingot mold or its support and the axis of the articulation connecting the second connecting rod to the ingot mold or its support is perpendicular to the casting axis at the point where this axis meets said plane.
  • this plane is located near or coincident with the lower face of the mold and the axis of the first eccentric is parallel to said plane when the mold is in the middle position.
  • Figure 8 is an elevational view showing another embodiment of the invention.
  • the installation shown in Figures 1 and 2 is intended for the production of billets or blooms. It comprises an ingot mold 10 fixed to an oscillation table 12.
  • the cavity of the ingot mold is curved and a corset of rollers 14 mounted on a frame or a frame 16 extend this cavity to support and guide the product poured out of the ingot mold. It is designed, at least in its upper part, to force the poured product to follow a curved path, in an arc of a circle.
  • This path is symbolized in the figure by the dashed line 17, which will be called below the pouring axis and which in fact represents the trajectory of the center of any straight section of the cast product.
  • the table 12 is supported by a steering rod 18 and a balancing rod 20 mounted on eccentrics 22 and 24 ( Figures 3 and 4).
  • the mounting of each connecting rod on its eccentric prevents any movement of the connecting rod in the planes containing the axis of the eccentric.
  • the connecting rod 18 requires the ingot mold to oscillate in a direction perpendicular to the axis of the eccentric 22.
  • the connecting rod 20 keeps the table 12 in stable equilibrium while allowing its oscillations.
  • These eccentrics are integral with shafts 26 and 28 mounted on bearings 30 and 32 fixed on the chassis 16.
  • the axis XX 'of the shaft 26 is located in the plane containing the casting axis and is perpendicular to the tangent TT 'to this axis at a point 0 which is located in the outlet plane of the ingot mold, when the latter is in the middle positions.
  • the axis of the eccentric 22, which is parallel to the axis XX ', is also parallel to this plane and perpendicular to the tangent TT'.
  • the axis Y-Y 'of the shaft 28 and that of the eccentric 24 are horizontal and perpendicular to the axes of the shaft 26 and the eccentric 22.
  • the head of the connecting rod 18 is linked to the table 12 by a universal joint 34 and the head of the connecting rod 20 is articulated on the table by means of a shaft 36 whose axis is parallel to the axis YY 'of tree 28.
  • the shafts 26 and 28 are coupled by means of extensions 38 and bevel gear boxes 40 to a motor unit 42 so that the eccentrics 22 and 24 are driven at the same speed and in synchronism.
  • the eccentricity of the eccentric 24 is slightly smaller than that of the eccentric 22 so that the straight back and forth movement, in a direction parallel to the tangent TT ', which is imposed by the connecting rod 18, is accompanied by a tilting around the axis 36.
  • These combined movements allow the mold to be displaced along a trajectory which, taking into account the small amplitude of the oscillations, is very little different from the theoretical curved trajectory, at least at the exit from the mold where it is very important to respect the theoretical curvature.
  • the balancing rods 20 'and 20 are arranged symmetrically with respect to the plane of symmetry S-S' of the machine and mounted on eccentric shafts 28 'and 28", identical and aligned along the axis Y-Y'.
  • the shafts 28 'and 28 "as well as the eccentric shaft 26 on which the steering rod 18 is mounted are coupled to the three outputs of a bevel gearbox 44 which is fixed to the chassis of the machine, between the bearings 26, 28 'and 28 "eccentric shafts.
  • the input of the gearbox 44 is coupled to a geared motor group 46.
  • the connecting rods are arranged, relative to the ingot mold, opposite the center of curvature of the casting axis, but the rod 18 being closer to the mold 10 than the rods 20 'and 20 ", the eccentricity of the eccentric on which it is mounted is smaller than that of the eccentrics actuating the rods 20 'and 20 ".
  • FIGS. 6 and 7 which is intended for the production of very wide slabs, a support was produced at three points of the oscillation table 12 by splitting the connecting rod.
  • the table 12 which has been shown in broken lines in FIG. 6, has the shape of a rectangular frame and the two steering rods 18 ′ and 18 "have been placed on the short sides of the table, near the large inner side, that is to say that which is closest to the center of curvature of the cavity of the mold 10.
  • the axes Xi-X'i and X 2 -X ' 2 of the two eccentric shafts on which the connecting rods 18' and 18 "are mounted are parallel and the two eccentrics and the connecting rods have the same plane perpendicular to these axes as a plane
  • the balancing rod 20 is placed on the other long side of table 12, in the middle of it.
  • the axes X 1 -X ' 1 and X z -X' z of the eccentric shafts carrying the rods 18 'and 18 "are perpendicular to the direction of the tangent TT' to l pouring axis at a point 0 which is situated in the outlet plane of the ingot mold when the latter is in its middle position; these axes are, moreover, parallel to the vertical plane containing the axis of the casting and located on either side of it.
  • the head of the connecting rods 18 'and 18 is linked to the table 12 by a cardan joint 34', 34".
  • the axis YY 'of the eccentric shaft carrying the connecting rod 20 is horizontal and perpendicular to the axes X i -X' 1 and X z -X ' z .
  • the head of the connecting rod 20 is also linked to the table 12 by a universal joint 48 to avoid subjecting the connecting rod and the eccentric shaft to excessive stresses in the event of deformation of the table 12.
  • the balancing rod could also be split; there would then be two connecting rods arranged on the long sides of the table, in the middle, and mounted on two eccentric shafts whose parallel axes would be perpendicular to the vertical plane containing the pouring axis.
  • All the eccentric shafts are coupled by means of extensions 38 and bevel gear boxes and driven in synchronism by one or two motor groups, such as 42.
  • the table 12 is supported by a connecting rod 18 and a balancing rod 20.
  • These connecting rods could obviously be split as in the embodiments described above.
  • the axis of the shaft 36 through which the connecting rod 20 is articulated on the table 12 and the center of the universal joint 34 connecting the connecting rod 18 to the table are located in a plane whose trace on the plane of the figure is represented by the line Z-Z '. This plane meets the casting axis 17 at point 0 and is perpendicular to this axis at this point; it therefore contains the center of curvature C of the casting axis.
  • the amplitudes of the oscillations generated by the rotation of the eccentrics 22 and 24 are in the ratio of the distances separating the center of the universal joint 34 from the axis passing through the center of curvature C and perpendicular to the vertical plane containing the axis on the one hand, and the axis of the shaft 36 of this same axis passing through C, on the other hand, so that when the ingot mold oscillates the plane ZZ 'always remains perpendicular to the axis of casting at the point where this plane meets this axis.
  • Zi-Z'i and Z2-Z2 show the positions of this plane corresponding to the extreme positions, upper and lower, of the mold.
  • the axis X-X 'of the shaft 26 carrying the eccentric 22 is parallel to the plane Z-Z' and, therefore, perpendicular to the tangent T-T 'at point 0; in this position, the axis of the mold cavity coincides with the casting axis.
  • the centers of the two universal joints and / or of the two articulation shafts connecting the connecting rods 18 and 20 to the table 12 are all located in the same plane Z- Z '.
  • the description above only refers to installations with a curved ingot mold.
  • the axis of the eccentric on which the steering rod is mounted is perpendicular to the axis of the mold and, if it is inclined, parallel to the vertical plane containing this axis.
  • the eccentricities of the eccentrics actuating the steering and balancing rods are equal and the universal joint connecting the head of the steering rod to the mold or to its support can be replaced by a shaft whose axis is parallel to that of the eccentric actuating this connecting rod.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (13)

1. Oszillationsantriebs- und -führungsvorrichtung einer Stranggußkokille (10), bestehend aus mehreren Steuerstangen, die auf durch einen festen Gestell (16) getragenen Exzentern montiert sind und durch Gelenke mit der Kokille (10) oder deren Traggesteitverbunden sind, dadurch gekennzeichnet, daß sie aus einer ersten Steuerstange (18), die auf einem ersten Exzenter (22) montiert ist, dessen Achse senkrecht zur Gießachse oder zur Richtung der Tangente zu dieser Achse in einem in der Nähe des Kokillenaustritts liegenden Punkt und parallel zur Vertikalebene, in der die Gießachse verläuft, ist, und aus einer zweiten Steuerstange (20), die auf einem zweiten Exzenter (24) montiert ist, dessen Achse horizontal und senkrecht zur Achse des ersten Exzenters ist, besteht, und daß die Befestigung jeder Steuerstange am jeweiligen Exzenter und auf der Kokille (10) oder deren Traggestell (12) so vorgesehen ist, daß jede Bewegung der Steuerstange gegenüber dem Gestell (16) und der Kokille in einer zur Achse des jeweiligen Exzenters parallelen Richtung verhindert wird.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Steuerstangen auf zwei gegenüberliegenden Kokillenseiten angeordnet sind.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Steuerstangen auf derselben Kokillenseite angeordnet sind.
4. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Kopf der zweiten Steuerstange (20) mittels einer Welle (36), deren Achse zur Achse (Y-Y') des Exzenters (24) parallel ist, auf dem die Steuerstange montiert ist, auf der Kokille (10) oder deren Traggestell (12) gelenkig angebracht ist.
5. Vorrichtung nach Anspruch 4 für die Oszillationsantrieb- und -führung einer senkrechten Kokille, dadurch gekennzeichnet, daß der Kopf der ersten Steuerstange mittels einer Welle, deren Achse zur Achse des Exzenters parallel ist, auf dem die erste Steuerstange montiert ist, auf der Kokille oder deren Traggestell auch gelenkig angebracht ist.
6. Vorrichtung nach Anspruch 4 für die Oszillationsantrieb- und -führung einer gebogenen Kokille, dadurch gekennzeichnet, daß die beiden Exzenter, die synchron angetrieben werden, eine unterschiedliche Exzentrizität haben und daß der Kopf der ersten Steuerstange (18) durch ein Kreuzgelenk (34) mit der Kokille verbunden ist.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Ebene (Z-Z'), in der der Mittelpunkt des Kreuzgelenks (34) liegt, das die erste Pleuelstange (18) mit der Kokille (10) oder deren Traggestell (12) verbindet, und in der die Achse des Gelenks (36) liegt, die die zweite Steuerstange (20) mit der Kokille oder deren Traggestell verbindet, zur Gießachse (17) im Punkt (0) senkrecht ist, wo diese Achse die Ebene (Z-Z') schneidet.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Amplituden der der Kokille (10) durch das erste und das zweite Exzenter (22 und 24) gegebenen Oszillationen im gleichen Verhältnis stehen wie die Abstände zwischen einerseits dem Mittelpunkt des Kreuzgelenks (34) und der Achse, die durch den Krümmungsmittelpunkt (C) der Gießachse geht und zur Ebene senkrecht ist, in der die Gießachse verläuft, und andererseits der Achse des Gelenks (36), die die zweite Steuerstange (20) mit der Kokille (10) oder deren Traggestell (12) verbindet, und dieser Achse, die durch den Krümmungsmittelpunkt (C) der Gießachse geht.
9. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß der Punkt (O), wo die Ebene (Z-Z'), in der der Mittelpunkt des Kreuzgelenks (34) und die Achse des Gelenks (36) liegen, die Gießachse (17) schneidet, sich in der Nähe der unteren Seite der Kokille (10) befindet oder mit der Ebene der unteren Seite der Kokille zusammenfällt.
10. Vorrichtung nach irgendeinem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß die zweite Steuerstange gedoppelt wird, wobei die beiden, die Einzelsteuerstange ersetzenden Steuerstangen (20', 20") auf. zwei Exzenterwellen (28', 28") montiert sind, die auf derselben Achse ausgerichtet und voneinander axial entfernt sind, und diese beiden Wellen sowie die Exzenterwelle (26), auf der die erste Steuerstange (18) montiert ist, mit den Ausgängen eines einzigen, zwischen diesen Wellen angeordneten Kegelradgetriebes (44) gekoppelt sind.
11. Vorrichtung nach Anspruch 1 oder 7 für die Oszillationsantrieb- und -führung einer Brammenkokille (10), die auf einem aus einem rechteckigen Rahmen bestehenden Traggestell (12) befestigt ist, dadurch gekennzeichnet, daß die erste Steuerstange gedoppelt wird und die beiden, die Einzelsteuerstange ersetzenden Steuerstangen (18', 18") auf beiden Schmalseiten des Traggestells (12) so angeordnet sind, daß sie als Mittelebene eine einzige Ebene ermöglichen, die senkrecht zu den Achsen (Xi-X'i, X2-X'2) der entsprechenden Exzenter ist, die zu den Schmalseiten des Traggestells parallel sind, und daß die zweite Steuerstange (20) auf einer Längsseite des Traggestells (12), in deren Mitte, angeordnet ist, wobei die Achse des Exzenters, auf dem diese zweite Steuerstange montiert ist, parallel zur Längsseite des Traggestells ist.
12. Vorrichtung nach Anspruch 1 für die Oszillationsantrieb- und -führung einer gebogenen Kokille, dadurch gekennzeichnet, daß die Exzenter der ersten Steuerstangen (18', 18") einerseits, und der zweiten Steuerstange (20) andererseits, eine unterschiedliche Exzentrizität haben, und daß der Kopf der ersten Steuerstangen (18', 18") durch ein Kreuzgelenk mit dem Traggestell (12) verbunden ist.
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß der Kopf der zweiten Steuerstange (20) durch ein Kreuzgelenk mit dem Traggestell (12) verbunden ist.
EP82401295A 1981-08-10 1982-07-09 Antriebs- und Oszillationsführungsvorrichtung einer Stranggusskokille Expired EP0073160B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401295T ATE10713T1 (de) 1981-08-10 1982-07-09 Antriebs- und oszillationsfuehrungsvorrichtung einer stranggusskokille.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8115430A FR2510924A1 (fr) 1981-08-10 1981-08-10 Dispositif de commande et de guidage des oscillations d'une lingotiere de coulee continue
FR8115430 1981-08-10
FR8206730A FR2525132A2 (fr) 1982-04-20 1982-04-20 Dispositif de commande et de guidage des oscillations d'une lingotiere de coulee continue
FR8206730 1982-04-20

Publications (2)

Publication Number Publication Date
EP0073160A1 EP0073160A1 (de) 1983-03-02
EP0073160B1 true EP0073160B1 (de) 1984-12-12

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EP82401295A Expired EP0073160B1 (de) 1981-08-10 1982-07-09 Antriebs- und Oszillationsführungsvorrichtung einer Stranggusskokille

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US (1) US4480678A (de)
EP (1) EP0073160B1 (de)
DE (1) DE3261543D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577277A (en) * 1983-03-07 1986-03-18 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus of continuous casting by the use of mold oscillating system
DE3403598A1 (de) * 1984-02-02 1985-08-08 SMS Schloemann-Siemag AG, 4000 Düsseldorf Fuehrungsvorrichtung fuer eine oszillierend angetriebene stranggiesskokille
FR2569589B1 (fr) * 1984-08-29 1986-09-05 Fives Cail Babcock Mecanisme de commande des oscillations d'une lingotiere de coulee continue
IT1181219B (it) * 1984-09-17 1987-09-23 Danieli Off Mecc Colata continua con agitatori polifunzionali
AT382540B (de) * 1985-06-27 1987-03-10 Voest Alpine Ag Stranggiessanlage mit einer auf einem oszillierenden hubtisch gelagerten kokille
FR2593098B1 (fr) * 1986-01-17 1988-04-01 Fives Cail Babcock Perfectionnements aux machines de coulee continue.
US4953613A (en) * 1987-02-16 1990-09-04 Thyssen Edelstahlwerke Ag Lifting device on a continuous casting mold
DE3925939A1 (de) * 1989-08-03 1991-02-07 Mannesmann Ag Stranggiessanlage mit einer kokillenoszillationsvorrichtung
US5219029A (en) * 1992-03-09 1993-06-15 Gunther Behrends Oscillator for continuous casting mold

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343592A (en) * 1965-09-22 1967-09-26 Concast Inc Reciprocating continuous casting curved mold mounting system
FR1490342A (fr) * 1966-08-26 1967-07-28 Dispositif pour faire osciller la coquille de passage dans des installations de coulée continue des métaux
US3523571A (en) * 1967-03-01 1970-08-11 Vitaly Maximovich Niskovskikh Mold joggler for continuous casting
DE1758554A1 (de) * 1968-06-26 1971-02-11 Schloemann Ag Vorrichtung zur Fuehrung von oszillierend angetriebcnen Stranggiesskokillen
BE794852A (fr) * 1972-02-01 1973-05-29 Concast Ag Dispositif de guidage d'une lingotiere animee d'une oscillation dans une installation de coulee continue ou la barre suit une trajectoire courbe
AT328120B (de) * 1973-06-09 1976-03-10 Schloemann Siemag Ag Stranggiessanlage mit einem aus der giessstellung schwenkbaren kokillentrager
DE2822138C3 (de) * 1978-05-20 1981-10-15 Jürgens, Walter, Dr.-Ing., 5100 Aachen Oszillationsvorrichtung für eine Stranggießkokille
IT1104414B (it) * 1978-08-23 1985-10-21 Continua Int Dispositivo per impartire il movimento oscillatorio alla lingottiera aperta da una linea di colata in impianti per la colata continua di metalli in particolare di acciai
ATE2487T1 (de) * 1979-12-19 1983-03-15 Concast Holding Ag Vorrichtung zum oszillieren einer stranggiesskokille.

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EP0073160A1 (de) 1983-03-02
US4480678A (en) 1984-11-06
DE3261543D1 (en) 1985-01-24

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